Home / 28,139.60-38,837.84-18,080.62

Finding the Fourth Proportional to 28,139.60, 38,837.84 and 18,080.62

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Solution

The fourth proportional to 28,139.60, 38,837.84 and 18,080.62 is: 24,954.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.60 : 38,837.84 = 18,080.62 : x
  2. Step 2: Convert to fraction form
    28,139.60/38,837.84 = 18,080.62/x
  3. Step 3: Cross multiply
    28,139.60x = 38,837.84 × 18,080.62
  4. Step 4: Simplify right side
    28,139.60x = 702,212,039.16
  5. Step 5: Solve for x
    x = 702,212,039.16/28,139.60
  6. Step 6: Final answer
    x = 24,954.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.